No partials in lowest 1 1/2 octaves?

[Don Mannino]

This message is in MIME format. Since your mail reader does not understand
this format, some or all of this message may not be legible.

---------------------- multipart/mixed attachment
Regarding fundamental in the low octaves - 

While it's true that the fundamental isn't very strong in the low bass
of most pianos, one interesting thing I have found is that sometimes
physical coupling of the microphone to the piano helps. Using TuneLab,
try changing from external mic to internal with the computer sitting on
the bass/tenor plate strut.  In my experimenting I found the internal
mic works better, because the whole laptop is being vibrated at the
lower frequencies.  The external mic is very nice for the treble,
though.

In the Lincolnton Kawai factory, we found that the bass section reads
best with a larger microphone (designed for singing) laid down on the
keys. Same effect. Pick up the mic off the keys, and the lower
frequencies don't read so well.

I also tried clipping my lapel microphone directly to the bridge pins.
Didn't get so much of a difference that way - but I only tried it once,
briefly.

Don Mannino

> -----Original Message-----
> From:	Robert Scott [SMTP:rscott@wwnet.net]
> Sent:	Thursday, June 18, 1998 7:22 AM
> To:	pianotech@ptg.org
> Subject:	No partials in lowest 1 1/2 octaves?
> 
> Bob Sadowski wrote:
> 
> >>>
> This Sunday at our local chapter meeting we employed an RCT to
> analyze the partials in the low bass on my 1911 S & S "O".  The graph
> showed absolutely no fundamental on the lowest 1 1/2 octaves.
> <<<
> 
> The basic problem is microphone response.  Good microphones to pick up
> the frequency range below 60 Hz do exist, but they are large,
> expensive,
> and are not usually found in laptop computers.  If you got a hold of
> one of those expensive studio microphones and plugged it in to your
> laptop,
> you might see a different picture.
> 
> Robert Scott
> Detroit-Windsor Chapter, PTG

---------------------- multipart/mixed attachment
A non-text attachment was scrubbed...
Name: not available
Type: application/ms-tnef
Size: 4130 bytes
Desc: not available
Url : https://www.moypiano.com/ptg/pianotech.php/attachments/31/5b/9a/59/attachment.bin

---------------------- multipart/mixed attachment--